Emergency-brake for street-cars.



F. WIRSING.

EMERGENCY BRAKE FOR STREET CARS.

APPLICATION FILED 11017.19, 1909.

Patented June 13, 1911.

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Ar r0 FP/VEV EMERGENCY-BRAKE FOR STREET-CARS.

995,311. Specification of Letters Patent.

Patented June 13, 1911.

Application filed November 19, 1909. Serial No. 528,953.

To all whom it may concern:

Be it known that I, FRED VVIRsING, a citizen of the United States of America, and resident of No. 30 East Fifth street, Newport, county of Campbell, and State of Kentucky, (post-office address Fifth and Main streets, in the city of Dayton, county of Campbell, and State of Kentucky,) have invented an Improvement in Emergency- Brakes for Street-Cars; and I do hereby declare the following to be a full and exact description thereof reference being had to the accompanying rawings, making part of this specification.

My invention relates to emergency brakes for street cars, and it has for its object the improvement in the construction of such devices whereby they are simplified and rendered more efficient.

The novelty of my invention consists in the combination and sub-combination of the parts as will be hereinafter set forth and specifically pointed out in the claim.

In the drawings: Figure 1 is a side elevation partially in section of my emergency brake. Fig. 2 is a view showing how the emergency brake is attached to a car. Fig. 3 is a view looking up from below showing the main working parts of my brake. Fig. 4; is a section on line 4, 4, of Fig. l.

A is a brake rod, having a wheel B, for turning the same. The lower end of the brake rod is threaded and works in a casting C, attached beneath the floor of the car are castings D, D to which the shoe E, and dog F, are pivoted. A collar G is attached shoe E. The shoe E swings on a rod I, which is offset so that the axis of that portion of the rod passing through the shoe E is not on a line with the axis of that portion. passing through the castings D and D The offsetting of the rod I, causes the shoe E to bind on the rail K, harder when the shoe E has been brought in contact with the rail while the car is in motion. The offset rod I, acts as a cam, the friction between the rail and the shoe drags the shoe rearward when the car is moving in the direction of the arrow, rotating the offset rod I, and causing the shoe to wedge between the dog F, and the rail, upon releasing the brake the shoe will be carried up with the staff and the offset rod restored to the position illustrated in the drawing.

The operation of my brake is as follows: The hand wheel B is turned in one direction causing the lower end of the brake rod to press down on the dog F, the dog F acts 011 the shoe E, pressing it down on the rail K, thereby stopping the car. If the hand wheel B is turned in the opposite direction it will raise the shoe from the rail, as the links H are attached to the brake rod and shoe E.

, Having described my invention what I claim is An emergency brake, comprising a brake rod, the lower portion of the brake rod threaded, a dog, a brake shoe attached to the lower end. of the brake rod, and pivoted on an offset rod, all substantially as described.

FRED WVIRSING.

to the lower end of the brake rod A, to which lVitnesses: the upper ends of links H are secured, the EDITH E. LEMON, lower end of the links being pivoted to the J. C. LEMON.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. C. 

